TWI485310B - Lock mechanism - Google Patents

Description

Lock mechanism Field of invention

The invention relates to a lock mechanism. More specifically, the present invention relates to a lock mechanism for a cylindrical lock of a door.

Background of the invention

There are different types of locks. One of the most common types is a cylindrical lock. The cylindrical lock typically includes a locking mechanism that, when in a closed position, extends the closure member from a closure member into a corresponding retaining member about the frame surrounding the closure member to prevent the closure member from Opened with permission. There are different types of locking mechanisms, such as, for example, pin tumbler mechanisms that require a key, a tray tumbler mechanism, and simple manual control such as a thumb bolt. .

The cylindrical lock typically extends through the thickness of a closure member to allow access to and control of the locking mechanism from both sides. Therefore, it is possible that there is a thumb lock on the inner side of the closure member to allow easy opening from the inside, and on the outer side there is a latch tumbler that allows only those who have the key to enter.

The present invention is mainly directed to a European standard lock cylinder having a key lock mechanism on both sides. Such cylinders are generally circular in cross section with radial projections.

In a conventional cylindrical lock, a cam system is placed approximately midway between the thickness of the closure member in the locking assembly. The cam is rotatable and defines a lever that projects radially from the cam. When the lock cylinder is fitted with a key (ie, not yet locked), the lever can only be aligned with the radial projection of the cylindrical cross section of the Euro lock. When in the locked condition, the cam is in a rotational position, and the lever protrudes out of alignment with the radial projection so that the lock cylinder cannot be moved. The cam is coupled to a latching bolt projecting from the latching assembly such that the cam rotates in a first direction causing the cam to retract the latching latch to open the closure member.

To provide the ability to open the closure member from both sides, the cam is selectively coupled to the locking mechanism on both sides (i.e., interior and exterior) of the closure member. The coupling relationship is generated by a clutch that is axially slidable along the cylinder between a first position and a second position, the clutch being in the first position at the internal locking mechanism and the A loading path is formed between the cams, and the clutch forms a loading path between the external locking mechanism and the cam in the second position.

Therefore, when the clutch is in the first position, it is free to move relative to the outer side; and when it is in the second position, it is free to move relative to the inner side. In other words, the clutch always forms a loading path only between one of the locking mechanisms and the cam.

This configuration is useful, for example, in the case where a latch tumbler mechanism is provided on each side of the cam. If the clutch engages the two latch tumbler mechanisms, the user will have to insert the key from each side simultaneously to open the closure member, which is obviously not desirable. In fact, the clutch is usually limited by the junction of the end of the key.

Typically, the clutch has a predetermined position that is biased to the predetermined position unless advanced to the other condition by, for example, inserting a key. In many instances, particularly when the internal locking mechanism is a thumb latch, the clutch is biased into the first position by a spring. Therefore, the user can easily open the closing member by simply rotating the thumb latch.

The known type of lock described above has a problem in that it can be relatively easily broken into and driven by the lock. Applying a force from the outer side with a tool (such as a screwdriver, a fixed pliers, or a wrench) can break the assembly of the split cylindrical lock, leaving the latch mechanism exposed, and thus allowing the latch to be manipulated without permission. It is potentially possible to open the closure member.

Forced outer cylinder deformation causes the point at which the lock is mounted (naturally the weakest point) to rupture, which is also located in the cam segment. When the rupture occurs, the outer cylinder can be pulled off and the unbound clutch and cam assembly can be removed or pushed or dropped to expose the lock mechanism. In many instances, the geometry of the cam means that it can be swayed and pivoted in the assembly to be released, thereby providing access to the latch mechanism.

Summary of invention

It is an object of the above invention to provide an improved lock mechanism.

According to a first aspect of the present invention, a cylindrical lock is provided, comprising: a lock mechanism; a lock cam that is drivable to open the lock mechanism; and a first lock actuating on a first side of the lock cam a second lock actuator assembly disposed on a second side of the lock cam, the second side being substantially opposite the first side; a clutch defining an axis, the clutch being movable along The axis is moved by: a first state in which the clutch provides a forced path from the first actuator to the rotation of the lock cam to lock or unlock the lock mechanism, a second state Providing a forced path from the second actuator to rotation of the lock cam to lock or unlock the lock mechanism, and a third state in which the clutch is incapable of moving along the axis; Further included is a set of safety mechanisms configured to remove the clutch into the third state when the assembly is removed.

By locking the clutch in an axial position, it is less susceptible to damage and less susceptible to removal.

Preferably, the assembly is the first lock actuator assembly.

Preferably, the lock includes a resilient member configured to bias the clutch to a third state, wherein the assembly has an operational position in which the lock mechanism is intact and in the operational position, the assembly A junction is formed that limits movement of the clutch to a third state.

Preferably, the clutch includes a first actuator of the first actuator assembly and a second actuator of the second actuator assembly, wherein the first actuator is removed The clutch is driven to move to the third state in the second actuator assembly.

Preferably, the first and second actuators are adjacent, the second actuator is biased toward the first actuator into a second state, such that removing the first actuator allows the second actuator to move Up to one represents the overtravel position of the third state.

Preferably, in the third state, the clutch is unable to move along the axis by a mechanical locking mechanism.

Preferably, the mechanical locking mechanism includes a resilient biasing element configured to engage the second actuator when the second actuator is in the overrun position.

Preferably, in the third state, the clutch provides a forced path from the second actuator to the cam to open the lock mechanism.

Preferably, an anti-drilling assembly is mounted to one of the cam and the clutch and configured to at least partially be exposed when the assembly of the lock mechanism is removed.

The anti-drill assembly can include a latch that is secured to the clutch and aligned with the axis. Preferably, in the third state, the latch passes through the cam and is exposed to a first lock actuator side of the cam.

The anti-drill assembly can include a flat plate attached to a first lock actuator side of the cam.

Preferably, the anti-drilling assembly comprises a hardened steel component.

Preferably, the lock cam includes: a radially protruding cam lever; and an inner interface surface abutting the clutch in the third state; wherein the inner joint surface and the lock cam The distance between the two sides is greater than the distance between the first side of the lock cam and the radially projecting cam lever.

Preferably, the width of the cam lever is substantially equal to the width of the interior of the locking mechanism, thus reducing the degree of freedom of rotation of the main axis.

Preferably, the lock cam has a width of 1 to 8 mm and is smaller than a width of the inside of the locking mechanism. In this way, it is more difficult to force the cam to be forced to rotate away from the assembly.

According to a second aspect of the present invention, a lock assembly is provided, comprising: a cylindrical lock including a rotatable cam about a main axis; and a locking mechanism including a through passage for receiving the cylindrical lock, the locking mechanism Having an inner motion region in which the cam is operable, the inner motion region having a width in a direction substantially parallel to the main axis; wherein the width of the lock cam is substantially equal to the width of the interior of the locking mechanism, thus decreasing The degree of freedom of rotation of the main axis.

According to a third aspect of the present invention, a cylindrical lock is provided, comprising: a lock cam assembly including a lock cam that is drivable to lock or unlock a lock mechanism; a first side disposed on the lock cam a first lock actuator assembly; and a second lock actuator assembly disposed on a second side of the lock cam, the second side being substantially opposite the first side; wherein the cylinder A weakened region of the form lock is defined at an interface between the first lock actuator and the lock cam, or a first lock actuator side of the lock cam.

Preferably, the weakened region comprises a partially tapered or scored section of material.

Preferably, the lock includes a securing member configured to secure the first lock actuator assembly to the lock cam assembly, wherein the weakened region is defined above the retaining member.

Preferably, the lock comprises a fixing member, the fixing member comprising: a first actuator mounting arm for mounting the first lock actuator; and a second for mounting the second lock actuator An actuator mounting arm; and a central mounting portion for mounting the cylindrical lock to a lock mechanism; wherein the weakened region is defined by the fixed member being interposed between the first actuator mounting arm and the center Between the installation parts.

Preferably, the weakened region comprises an interface between two components of an assembly.

Advantageously, providing the weakened region described above means that attempting a forced entry will only remove the first lock actuator, leaving the cam properly, thus preventing access to the interior of the locking mechanism.

Simple illustration

An exemplary lock mechanism will now be described with reference to a lock diagram, wherein: Figures 1a through 1c are external front views of a double lock cylinder in accordance with the present invention; and Fig. 2 is a portion of the lock cylinder of Figs. 1a through 1c. 3 is a side cross-sectional view of another portion of the lock cylinder of Figures 1a to 1c; and Figure 4 is a side cross-sectional view of the portion of the lock cylinder of Figures 1a to 1c, showing the second and 3 interactions between the features shown in the figures; Figures 5a to 5c show the sequence of operations of the lock cylinders of Figures 1a to 1c; Figures 6a to 6c show the locks of Figures 1a to 1c corresponding to the sequence of 5a to 5c a sequence of operations of a portion of the cylinder; Figures 7a through 7c show an operational sequence of a portion of a second lock cylinder in accordance with the present invention; and Figs. 8a through 8b are perspective exploded views of a third lock cylinder in accordance with the present invention. Figure 9a to 9b are exploded perspective views of a fourth lock cylinder in accordance with the present invention; and Figs. 10a through 10b are perspective exploded views of a fifth lock cylinder in accordance with the present invention.

Detailed description of the preferred embodiment

Referring to Figures 1a through 1c, a pair of lock cylinders 100 are shown passing through the thickness of a closure member 10. The closure member 10 includes a locking assembly 50 disposed therein, which will be described in greater detail below. The closure member 10 defines an interior and an exterior. The cylinder includes a first lock actuator assembly 102, a cam assembly 104, and a second lock actuator assembly 106.

The first lock actuator assembly 102, the cam assembly 104, and the second lock actuator assembly 106 are generally cylindrical with radial projections 108, 110, 112, respectively, thereby forming a European gauge The lock cylinder 100. Each of the radial projections 108, 110, 112 defines an axial bore 114, 116, 118, respectively. Each radial projection 108, 112 defines a transverse perforation 120.

The radial projection 110 of the cam assembly 104 defines a lateral mounting hole 122.

The first lock actuator assembly 102 includes a first cylinder 124 that defines a keyhole 126. The second lock actuator assembly 104 includes a first cylinder 128 that defines another keyhole 130.

The cam assembly 104 includes a rotatable cam 132 that is generally cylindrical and includes a radially projecting cam lever 134. It will be appreciated that the cam lever 134 is always in an extended position (i.e., see Figures 1b and 1c) when the cylinder is in a locked condition regardless of whether a key is present or rotated. Therefore, the cylinder cannot be removed by axial sliding.

Turning to Fig. 2, the first lock actuator assembly 102 includes a latch tumbler lock mechanism 136 that can be driven by a key lock, as is well known in the art and will not be described herein. When a set of tumbler pins 138 are aligned with a shear plane 140, a key (not shown) can thereby rotate the first cylinder 124. The second cylinder 128 can also be rotated in the same manner by a key inserted into the keyhole 130 (the details of the latch tumbler locking mechanism in the assembly 106 are not shown).

Figure 2 shows a section without the cam assembly 104. As can be seen in FIG. 2, a first actuator 142 is disposed at the end of the first lock actuator assembly 102. The first actuator 142 includes a cylindrical head 144 that projects a cylindrical shaft 146. A generally radially extending plate member 148 extends from both the shaft 146 and the head 144.

Also shown in Fig. 2 is the second lock actuator assembly 106, which includes a second actuator 150. The second actuator 150 includes a cylindrical head 152 that extends out of a shaft 154. The cylindrical head 152 includes a pair of diametrically opposed and radially extending plate-like projections 156, 158. The cylindrical head 152 defines a recess 159 whose function will be described below.

Turning to Figure 3, the rotatable cam 132 is shown in cross section. The rotatable cam 132 includes a perforation 160 that defines first and second junctions 162, 164 that are diametrically opposed, respectively.

Finally, turning to Figure 4, the relationship between the actuators 142, 150 and the rotatable cam 132 is shown and will be described below.

Assembling the lock cylinder 100 first loads the first actuator 142 into the end of the first cylinder 124 such that the first actuator 142 can slide axially but cannot rotate relative to the first cylinder 124 (eg, Arranged by key or bolt slot). The second actuator 150 is assembled into the second cylinder 128 by a compression spring 166. A second actuator lock pin (not shown) is also mounted, which will be described in greater detail below.

The second lock actuator mechanism 106 is then axially aligned with the cam assembly 104 such that the second actuator 150 is seated within the cam 132. The first lock actuator mechanism 102 is then axially aligned with the cam assembly 104 such that the first actuator 142 is seated in the cam 132 as shown in FIG.

Then, the first lock actuator mechanism 102 and the cam assembly are made by passing a latch (not shown) through the current coaxial holes 114, 116, 118 and fixing with rivets passing through the transverse holes 120. 104. The second lock actuator mechanism 106 is secured to each other.

Next, the entire lock cylinder 100 can be slid into position within the closure member 10 and suitably threaded from the side of the closure member 10 through the mounting hole 122. Once in position, the cam 132 is aligned with the interior of the locking assembly 50 so that the cam lever 134 can actuate a latch (not shown) of the closure member 10 to open or pull the latch.

Once assembled, as can be seen in FIG. 4, the end of the shaft 146 of the first actuator 142 abuts the cylindrical head 152 of the second actuator 150. The first actuator 146 is thus contiguous with the second actuator 150 such that they can be rotated relative to each other but not mechanically coupled. The first actuator 146 forms a clutch with the second actuator 150.

When no key is inserted into the keyhole 126, as shown in FIG. 2, the first actuator 146 is advanced to its leftmost position with respect to the first cylinder 124. The first actuator 146 is advanced to this position by the interface with the second actuator 150, which is sequentially advanced by the spring 166. As can be seen in Figures 4 and 5a, the plate-like projections 156, 158 partially engage the junctions 162, 164 of the cam 132 at this location. Thus, the key in the rotating keyhole 130 can rotate the cylinder 128, which in turn rotates the actuator 150 (when it is inserted into the key or the opening slot to the cylinder 128 (not shown)); The effect of the lobes 156, 158 abutting the junctions 162, 164, the cam 132 can be rotated to drive the lock.

As shown in Fig. 1c, the keyhole 130 and the cam lever 134 are clearly rotated. It should be noted that when the plate member 148 does not engage the interface 162, 164 of the cam 132, the cylinder 124 does not rotate.

It should be noted that in this position, the spring 166 is still compressed and continuously urged over the second actuator 150.

When the lock cylinder is opened from the outside, a key (not shown) is inserted in one direction D (see Fig. 5b). Accordingly, the first actuator 142 and the second actuator 150 are advanced to the right side against the biasing spring 166 to further compress the spring 166. When this occurs, the projections 156, 158 are disengaged from the junctions 162, 164 and the plate 148 is engaged with the projection 164. This engagement forms a loading path between the first cylinder 124 and the cam 132. Thus, as shown in Figure 1b, the insertion of the correct key to press the tumbler latch 138 down to the shear plane 140 opens the lock. It is noted that when the second cylinder 128 no longer engages the cam 132, the cylinder 128 and the keyhole 130 cannot move.

Removal of the key allows the spring 166 to advance the actuators 142, 150 to the positions shown in Figures 4 and 5a.

Attempting to force access to the closure member 10 results in the forced removal of the first lock actuator assembly 102 (e.g., by the use of a screwdriver, a fixed pliers, a wrench, or the like). When this occurs, the lock cylinder 100 is naturally damaged by the line of weakness 103 between the first lock actuator assembly 102 and the cam assembly 104. The line of weakness 103 can be provided by an assembly line between the first actuator 102 and the cam assembly 104, or by weakening material (e.g., scores) in the area.

When this occurs, the first actuator 142 will fall unconstrained from the cam 132 and the action of the second actuator 150 biased by the spring 166 will positively push the first actuator 142 (See Figure 5c). When this occurs, the spring 166 will move the second actuator 150 into full engagement with the projections 162, 164.

Once in this position, the second actuator lock pin described above engages the recess 159 of the second actuator 150 to lock it in place.

Reference will be made to the third configuration of the second actuator 150: one between the leading edge of the second actuator 150 (ie, where it abuts the junction 162) and the second The dimension A between the ends of the cam 132 of the lock actuator assembly 106 is greater than a dimension B between the leading edge of the lever 134 and the edge of the cam 132 that is closest to the first lock actuator assembly 102.

This allows the cam 132 to remain in place and prevent the cam 132 from rotating (except for rotation about the intended primary axis of rotation). In other words, once the cam 132 is in place, the main axis of rotation X (see Figure 4) itself cannot be rotated. Thus, when the cam 132 is coupled to at least one of the actuator assemblies 102, 106, the cam 132 cannot be easily distorted from the mounting position.

The configuration and operation of a lock bolt assembly 170 is shown in Figures 6a through 6c.

The lock bolt assembly 170 includes a latch 172 that is slidable into a blind bore 174 and that is biased outwardly by a latch spring 176. The three positions of the second actuator 150 are shown in Figures 6a through 6c. These three positions correspond to those of Figures 5a through 5c. As can be seen in Figures 6a and 6b, the latch 172 generally floats along the outer surface of the cylindrical portion 152 until the state of Figure 5c is reached (i.e., the first actuator is removed). At this moment, the latch 172 engages the recess 159 and prevents the second actuator 150 from moving further.

In this way, when the second actuator 150 is assembled in the locking assembly 50, the second actuator 150 is held in place and cannot be removed from the remainder of the lock cylinder 100. This makes it very difficult to drive the lock and forcibly enters the closure member 10. It should be noted that a loading path is still present between the second cylinder 128 and the cam 132, allowing the lock to be driven by a key in the keyhole 130.

This allows an authorized user (a person who has entered by an alternative closure member) to open the closure member 10 to remove and recover the lock cylinder 100 when assembled in a lock assembly.

An alternative preferred configuration is shown in Figures 7a through 7c. The reference numerals for similar components are shown to be 100 more than the lock cylinder 100.

Figures 7a through 7c show a second actuator 250 at three positions corresponding to those of Figures 6a through 6c. The lock bolt assembly 270 is equipped in the second actuator 250. A hole 259 is provided in the barrel 228, and once the same state as in Figure 5c is reached (i.e., the first actuator is removed), the latch 272 of the lock bolt assembly 270 can be moved into the hole 259. It will be appreciated that the system operates in a similar manner to the method of the lock cylinder 100, however the latch 272 and the bore 259 are provided on different components.

Turning to Figures 8a and 8b, a lock cylinder 300 is shown. All features similar to the lock cylinder 100 are numbered 200. The main difference between the cylinder 100 and the cylinder 300 is as follows.

A fixed hub 3002 is provided that includes a central portion 3004, a first shaft 3006 and a second shaft 3008. The central portion 3004 defines a lateral mounting hole 322 that is similar to the mounting hole 122. Each shaft 3006, 3008 defines a transverse bore 3010 that corresponds to the counterbore 320 on the first and second lock actuator assemblies 302, 306. This makes it easy to assemble the lock cylinder 300 with the bolt 3024.

The fixed hub 3002 includes an overcut portion 3012 interposed between the central portion 3004 and the first shaft 3006 to provide partial weakening. Therefore, if the lock cylinder 300 is mounted from the side of the first actuator assembly 302, damage will occur in the overcut portion 3012, leaving the intact central portion 3004 and the second shaft 3008, and the The second actuator assembly 306.

It will be appreciated that a lock bolt assembly 370 is provided in the second actuator 350 in accordance with the configuration of Figures 7a through 7c. Once the second actuator 350 has been advanced to the same state as FIG. 7c (ie, if the first actuator assembly 302 is removed), the latch 372 can be associated with the second cylinder 328. The holes 359 are engaged.

The cam 332 is similar to the cam 132 except that it includes a bulkhead wall 3014 that separates the first actuator 342 from the second actuator 350. The bulkhead wall 3014 defines a perforation 3016 for the cylindrical shaft 346 of the first actuator 342. In addition to this, the partition wall 3014 is solid.

The first actuator 342 includes a radial projection 3018 projecting therefrom and engaging a blind groove (not shown) on the partition wall 3014. Likewise, the second actuator 350 includes a radial projection 3020 that engages a blind groove on the opposite side of the bulkhead wall 3014. It will be mentioned that the rotational engagement formations (protrusions 3018, 3020) between the actuators 342, 350 and the cam 332 are not overlapping, so that the blind groove can be made without significantly weakening the Partition wall 3014. In this example, the grooves for the projections 3018, 3020 are substantially diametrically opposed.

If the first actuator assembly 302 is removed and the second actuator 350 is moved to a position where the lock pin 372 engages the aperture 359 (ie, the third state), by inserting a suitable tool into the The passage hole 3022 in the cam 332 releases the lock pin 372. This can occur during manufacturing and assembly.

Turning to Figures 9a and 9b, a lock cylinder 400 is shown. All features similar to the lock cylinder 300 are numbered by more than 100. The main difference between the cylinder 300 and the cylinder 400 is as follows.

A blind hole 4050 is axially defined within the second actuator 450. A latch 4052 is inserted into the blind hole 4050 and attached thereto (e.g., by interference). When the first actuator assembly 402 is present, the shaft 446 of the first actuator 442 generally abuts the pin 4052. When the first actuator assembly 402 is removed, the pin 4052 can enter the aperture 4016 of the cam 432. When the second actuator 450 is in the third state (ie, once the first actuator assembly 402 has been removed), the length of the pin 4052 is sufficiently flush with the baffle 4014, or from the baffle 4014 stands out.

The pin 4052 is constructed of a hardened material to resist mechanical tools such as drill bits. Thus, once the first actuator assembly 402 has been removed, the lock cylinder 400, and in particular the cam 432, is less susceptible to being destroyed by such tools.

Turning to Figures 10a and 10b, a lock cylinder 500 is shown. All features similar to the lock cylinder 300 are numbered 200. The main difference between the cylinder 300 and the cylinder 500 is as follows.

A circular plate 5060 is provided adjacent the partition 5014 of the cam 532. The plate 5060 includes a recess 5062 that is aligned with a blind groove (not shown) that receives the projection 5018 of the first actuator 542 in the spacer 5014. The plate 5060 is secured to the cam 532 by crimping, adhering, or other suitable attachment means.

The plate 5060 is constructed of a hardened material to resist mechanical tools such as drill bits. Thus, once the first actuator assembly 502 has been removed, the lock cylinder 500, and particularly the cam 532, is less susceptible to being destroyed by such tools.

Variations of the above embodiments are within the scope of the invention.

The keyhole 130 and the corresponding second lock actuator assembly 106 can be replaced by a thumb lock.

In addition to the riveted pins, the cylinder and cam can be mounted by any known method.

Other cam 132 sizes are possible as long as their width is sufficient to span the thickness of the locking assembly 50.

The above embodiment shows that the first actuator 142 has a single engagement surface on the plate member 148 and the second actuator 150 has a pair of opposing junctions 162, 164. Any number of junctions can be used to convert torque from the actuators to the cam. Furthermore, any known mechanical interface can be used, such as a splined or friction interface.

Instead of the popped latch 172, any known locking method can be used. For example, a buckle spring engages an annular groove on the clutch to hold the clutch. Alternatively, the pop-up latch can be provided on the clutch. Alternatively, more than one method can be used for the combination (eg, two bouncing latches, or one bouncing latch and one clasp).

As an alternative to the relationship between dimensions A and B described above, the cam lever 134 can be made as wide as possible; preferably, to inhibit movement of the X-axis, it is as wide as the lock assembly 50.

10. . . Closing member

100. . . Lock cylinder

102. . . First lock actuator assembly

103. . . Weak line

104. . . Cam assembly

106. . . Second lock actuator assembly

108. . . Radial projection

110. . . Radial projection

112. . . Radial projection

114. . . Axial perforation

116. . . Axial perforation

118. . . Axial perforation

120. . . Transverse pierc

122. . . Horizontal mounting hole

124. . . First cylinder

126. . . Keyhole

128. . . Second cylinder

130. . . Keyhole

132. . . Cam

134. . . Cam lever

136. . . Bolt lock bolt locking mechanism

138. . . Brake pin

140. . . Shear plane

142. . . First actuator

144. . . Cylindrical head

146. . . axis

148. . . Plate component

150. . . Second actuator

152. . . Cylindrical head

154. . . axis

156. . . Plate-like projection

158. . . Plate-like projection

159. . . Groove

160. . . perforation

162. . . Junction

164. . . Junction

166. . . spring

170. . . Lock bolt assembly

172. . . plug

174. . . Blind hole

176. . . Pin spring

250. . . Second actuator

50. . . Locking assembly

300. . . Lock cylinder

302. . . First lock actuator assembly

306. . . Second lock actuator assembly

320. . . Transverse hole

322. . . Horizontal mounting hole

328. . . Second cylinder

332. . . Cam

342. . . First actuator

346. . . axis

350. . . Second actuator

359. . . hole

370. . . Lock bolt assembly

372. . . plug

3002. . . Fixed hub

3004. . . Central part

3006. . . First axis

3008. . . Second axis

3010. . . Transverse hole

3012. . . Overcut

3014. . . Partition wall

3016. . . perforation

3018. . . Protrusion

3020. . . Protrusion

3022. . . Channel hole

3024. . . plug

400. . . Lock cylinder

402. . . First actuator assembly

432. . . Cam

442. . . First actuator

446. . . axis

450. . . Second actuator

4014. . . Partition

4016. . . hole

4050. . . Blind hole

4052. . . plug

500. . . Lock cylinder

532. . . Cam

542. . . First actuator

5014. . . Partition

5018. . . Protrusion

5060. . . Round plate

5062. . . Notch

1a to 1c are external front views of a double lock cylinder in accordance with the present invention; Fig. 2 is a side cross-sectional view of a portion of the lock cylinder of Figs. 1a to 1c; and Fig. 3 is a lock of Figs. 1a to 1c. A side cross-sectional view of another portion of the cylinder; Fig. 4 is a side cross-sectional view of the portion of the lock cylinder of Figs. 1a to 1c, showing the interaction between the features shown in Figs. 2 and 3; Figure 5c shows the operational sequence of the lock cylinder of Figures 1a to 1c; Figures 6a to 6c show the operational sequence of a portion of the lock cylinder of Figures 1a to 1c corresponding to the sequence of 5a to 5c; Figures 7a to 7c show An operational sequence of a portion of a second lock cylinder in accordance with the present invention; FIGS. 8a through 8b are exploded perspective views of a third lock cylinder in accordance with the present invention; and FIGS. 9a through 9b are a fourth in accordance with the present invention. An exploded perspective view of the cylinder of the lock; and Figures 10a through 10b are perspective exploded views of a fifth lock cylinder in accordance with the present invention.

102. . . First lock actuator assembly

106. . . Second lock actuator assembly

108. . . Radial projection

112. . . Radial projection

124. . . First cylinder

126. . . Keyhole

128. . . Second cylinder

130. . . Keyhole

132. . . Cam

136. . . Bolt lock bolt locking mechanism

138. . . Brake pin

140. . . Shear plane

142. . . First actuator

144. . . Cylindrical head

146. . . axis

148. . . Plate component

150. . . Second actuator

152. . . Cylindrical head

154. . . axis

156. . . Plate-like projection

158. . . Plate-like projection

159. . . Groove

160. . . perforation

162. . . Junction

166. . . spring

Claims (21)

A cylindrical lock comprising: a lock mechanism; a lock cam driveable to open the lock mechanism; a first lock actuator assembly disposed on a first side of the lock cam; and a lock cam disposed on the lock cam a second side of the second lock actuator assembly, the second side being substantially opposite the first side; a clutch defining an axis, the clutch being movable along an axis between: a state in which the clutch provides a forced path from the first lock actuator assembly to the rotation of the lock cam to lock or unlock the lock mechanism, a second state in which the clutch provides a forced path from the second lock actuator assembly to the rotation of the lock cam to lock or unlock the lock mechanism, and a third state in which the clutch is unable to move along the axis; and A safety mechanism is included that is configured to place the clutch in the third state when a component of the lock mechanism is removed. A cylindrical lock according to claim 1 wherein the assembly is the first lock actuator assembly. A cylindrical lock according to claim 1 or 2, comprising a resilient member configured to bias the clutch to the third state, wherein the assembly has There is a complete operational position with the lock mechanism therein, and in this operational position, the assembly forms a junction that limits movement of the clutch to the third state. A cylindrical lock according to claim 1, wherein the clutch includes a first actuator of the first actuator assembly and a second actuator of the second actuator assembly, wherein Removing the first actuator drives the clutch to move to the third state. A cylindrical lock according to claim 4, wherein the first and second actuators are adjacent, and the second actuator is biased toward the first actuator to enter the second state, thus removing the first The actuator allows the second actuator to move to an overtravel position representative of the third state. A cylindrical lock according to claim 5, wherein in the third state, the clutch is prevented from moving along the axis by a mechanical locking mechanism. A cylindrical lock according to claim 6 wherein the mechanical locking mechanism includes a resilient biasing member configured to engage the second actuator when the second actuator is in the overrun position. A cylindrical lock according to claim 1, wherein in the third state, the clutch provides a forced path from the second actuator to the cam to lock or unlock the lock mechanism. A cylindrical lock according to claim 1, wherein an anti-drilling component is disposed on at least one of the cam and the clutch, and is assembled to remove the component of the lock mechanism, at least Partially exposed. a cylindrical lock according to claim 9 of the patent scope, wherein the anti-drilling component A latch is secured to the clutch and aligned with the axis. A cylindrical lock according to claim 10, wherein in the third state, the pin passes through the cam and is exposed to a first lock actuator side of the cam. A cylindrical lock according to claim 9 wherein the anti-drill assembly comprises a flat plate attached to a first lock actuator side of the cam. A cylindrical lock according to any one of claims 9-12, wherein the anti-drilling assembly comprises a hardened steel assembly. A lock assembly according to claim 1, wherein the lock cam comprises: a radially projecting cam lever; and an inner joint surface abutting the clutch in the third state; wherein the inner portion The distance between the interface surface and the second side of the lock cam is greater than the distance between the first side of the lock cam and the radially projecting cam lever. The lock assembly of claim 14, wherein the width of the cam lever is substantially equal to the width of the interior of the locking mechanism, thus reducing the degree of freedom of rotation of the main axis. The lock assembly of claim 14, wherein the lock cam has a width of 1 to 8 mm and is smaller than a width of the inside of the locking mechanism. A cylindrical lock comprising: a lock cam assembly including a lock cam that is drivable to lock or unlock a lock mechanism; and a first lock actuator disposed on a first side of the lock cam And a second lock actuator assembly disposed on a second side of the lock cam, the second side being substantially opposite the first side; and a fixing member having an attachment to a first actuator mounting arm of the first lock actuator assembly, a second actuator mounting arm for attachment to the second lock actuator assembly, and a cylindrical mounting arm for the second lock actuator assembly The lock is attached to a central mounting portion of a lock mechanism, wherein a weakened region is defined between the first actuator mounting arm and the central mounting portion. A cylindrical lock according to claim 17 wherein the weakened region comprises a partially tapered or scored section of material. A cylindrical lock according to clause 17 of the patent application, comprising a fixing member configured to fix the first lock actuator assembly to the lock cam assembly, wherein the weakened region is defined above the fixed member. A cylindrical lock according to claim 17, comprising a fixing member comprising: a first actuator mounting arm for mounting to the first lock actuator; and a mounting to the first a second actuator mounting arm of the second lock actuator; and a central mounting portion for mounting the cylindrical lock to a lock mechanism; wherein the weakened region is defined between the first actuator mounting The fixing member between the arm and the central mounting portion. A cylindrical lock according to claim 17 wherein the weakened region comprises an interface between the two components of an assembly.